Motor-Pump Unit Retainer Layout for Space-Saving Axle Mounting
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Solution Overview
Problem
Existing motor-pump units for vehicles face challenges in mounting and fastening due to limited installation space, requiring complex and time-consuming alignment for reliable attachment.
Innovation Solution
A motor-pump unit design featuring a hydraulic pump, a bearing tube, and retainers, including decoupling elements and a tie rod, allows for simple, inexpensive, and reliable fastening to an axle carrier using spectacle-shaped retainers and adjustable positioning, reducing vibrations and space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional mounting methods are used for motor-pump units, then reliable fastening can be achieved, but the alignment process becomes time-consuming and complex
Solution Approach 1:
The retainer is pre-integrated into the hydraulic pump assembly during manufacturing, with the bearing tube and mounting features already positioned and secured. This preliminary integration eliminates the need for time-consuming alignment operations during installation, as the entire assembly is pre-aligned and ready for direct mounting to the axle carrier
Solution Approach 2:
The patent combines the retainer, bearing tube, and hydraulic pump into a single integrated assembly. The retainer is merged with the pump housing, and the bearing tube is integrated into this combined structure, creating a unified component that simplifies installation while maintaining fastening reliability
2Reliability
If traditional fastening methods are used, then secure mounting is achieved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The retainer is integrated directly into the hydraulic pump housing as a unified structure, eliminating the need for separate fastening components. The bearing tube is also integrated into this combined assembly, reducing the total number of parts while maintaining secure mounting capability through the streamlined design
Solution Approach 2:
The integrated retainer structure serves multiple functions simultaneously: it provides structural support, enables mounting to the axle carrier, and maintains alignment of the bearing tube. This multi-functionality reduces device complexity by eliminating the need for separate components for each function
3Reliability
If conventional mounting arrangements are used, then adequate support is provided, but the installation space requirement increases
Solution Approach 1:
The bearing tube is nested within or integrated with the retainer structure, which itself is integrated into the hydraulic pump assembly. This nested arrangement allows multiple functional elements to occupy overlapping or adjacent spaces, reducing the overall volume required for installation while maintaining mounting stability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient, space-saving, and vibration-dampened mounting of motor-pump units in vehicles, ensuring reliable fastening and alignment without protruding flanges, adaptable to various axle assemblies.
Implementation Method 1
the at least one retainer has decoupling elements for decoupling vibrations. The decoupling elements can, for example, be designed as bearings, preferably rubber bearings, as spring elements, as damping materials or hydraulic dampers
Data Source
AI summary
A motor-pump unit for use in a motor vehicle includes a hydraulic pump for generating hydraulic pressure for driving hydraulic systems, a bearing tube for mounting the motor-pump unit inside the motor vehicle and at least one retainer for fastening the motor-pump unit to an axle carrier of the motor vehicle. The retainer is arranged at the end of the hydraulic pump.